CN115477862B - Inorganic water-in-water multicolor interior wall coating and preparation method thereof - Google Patents
Inorganic water-in-water multicolor interior wall coating and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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Abstract
The inorganic water-in-water multicolor interior wall coating comprises base paint, granulating glue and a continuous phase, wherein in the preparation process of high-modulus potassium silicate, pure acrylic or styrene-acrylic emulsion and expandable microbeads are added to carry out organic matter modification, and because the organic microsphere modified high-modulus potassium silicate solution is used as a film forming substance, the inorganic water-in-water multicolor interior wall coating has the characteristics of ultralow VOC, mildew resistance, strong decorative effect and the like, and has more excellent comprehensive performance: the viscosity change value is small after 14d of heat storage, the storage stability is excellent, the thick film has no cracking phenomenon on the premise of meeting the fire grade A and the high polymer organic matter content of less than 5 percent, and the washing resistance is excellent as high as 8000-15000 times; in addition, the invention has the characteristics of light specific gravity, difficult precipitation, low heat conductivity coefficient, good heat insulation performance, low cost and the like. The invention also relates to a preparation method of the inorganic water-in-water multicolor interior wall coating.
Description
Technical Field
The invention belongs to the field of coatings, and particularly relates to an inorganic water-in-water multicolor interior wall coating and a preparation method thereof.
Background
The paint has two main functions of protection and decoration. One of the most important indexes for the interior wall coating as a protective material is environmental protection, and the color form diversity as a decorative material is the best expression form for improving the decoration. Compared with the common emulsion paint, the common emulsion paint can only present one color at most at one time, if the common emulsion paint is sprayed with multiple colors, the common emulsion paint often needs to be replaced by multiple paint, and the common emulsion paint needs to be presented in a mode of collocating the edges of grooves and the plates, and the water-in-water multicolor paint can present patterns with multiple colors by one-time spraying without secondary processing. According to different operation places, can adjust out different colors through changing different base colors, novel structure forms the different visual effect of depth and decorative pattern on the wall moreover. However, the water-in-water multicolor interior wall coating in the current market is mostly prepared by adopting organic emulsion, and has a plurality of problems: not only is fireproof, environment-friendly and easy to mildew, but also is easy to settle and the like; in addition, along with the global warming trend, people pay more attention to the energy saving and emission reduction effects of building materials, and the water-in-water multicolor interior wall coating on the current market has no such effects.
At present, no colorful paint which is fireproof, environment-friendly, mildew-resistant, heat-insulating, heat-preserving and sedimentation-preventing exists, so that the development of an inorganic water-in-water colorful interior wall paint can meet the various demands of consumers, and the colorful interior wall paint is an creative work.
Disclosure of Invention
The invention aims to provide an inorganic water-in-water multicolor interior wall coating and a preparation method thereof, and an organic microsphere modified high-modulus potassium silicate solution is used as a film forming substance, so that the inorganic water-in-water multicolor interior wall coating has more excellent comprehensive performance: the waterproof and anti-mildew decorative material has the characteristics of ultralow VOC, class A fireproof performance, excellent washing resistance, strong mildew resistance, strong decorative effect and the like, and also has the characteristics of heat insulation, heat preservation, light weight, low cost and the like.
In order to solve the problems, the invention is realized by the following technical scheme:
the invention relates to an inorganic water-in-water multicolor interior wall coating which comprises the following components in parts by weight:
200-400 parts of granulating glue solution, 300-600 parts of base paint and 100-500 parts of continuous phase;
the granulating glue solution comprises the following components in parts by weight:
800-980 parts of deionized water,
20-120 parts of protective rubber powder;
the base paint comprises the following components in parts by weight:
wherein the colloid solution comprises the following components in parts by weight:
800-980 parts of deionized water,
20-120 parts of protective rubber powder;
wherein the continuous phase comprises the following components in parts by weight:
100 to 600 parts of deionized water,
1-2 parts of defoaming agent,
400-900 parts of organic microsphere modified high modulus potassium silicate solution.
The inorganic water-in-water multicolor interior wall coating is further optimized by:
the organic microsphere modified high-modulus potassium silicate solution comprises the following components in parts by weight:
the inorganic water-in-water multicolor interior wall coating is further optimized by:
the organic microsphere modified high-modulus potassium silicate solution is prepared by the following steps:
a. a small amount of deionized water, the temperature is controlled between 30 ℃ and 70 ℃, a potassium silicate solution with the modulus of 3.2 to 3.5 is added, silica sol is slowly dripped in the stirring process, and the rest deionized water is added after the dripping is finished; stirring for 20 minutes to prepare a mixed solution I;
b. dropwise adding methyltrimethoxysilane into the mixed solution I prepared in the step a, and stirring for 10 minutes to prepare a mixed solution II;
c. adding methyl silicone oil into the mixed solution II prepared in the step b, and stirring for 10 minutes to prepare a mixed solution III;
d. c, reacting the mixed solution III prepared in the step c in a constant-temperature water bath at 50-60 ℃ for 1h, and then putting the mixed solution III into an ultrasonic cleaner for ultrasonic treatment for 1h to prepare a high-modulus potassium silicate solution with higher transparency and 3.8-4.0 modulus;
e. adding one or a combination of pure acrylic emulsion and styrene-acrylic emulsion and expandable microspheres into the high-modulus potassium silicate solution prepared in the step d, and magnetically stirring for 1h to prepare the organic microsphere modified high-modulus potassium silicate solution.
The inorganic water-in-water multicolor interior wall coating is further optimized by:
the wetting dispersant is a polycarboxylate ammonium salt dispersant, so that the pigment loading capacity can be increased, and the dispersibility in pulping can be improved.
The inorganic water-in-water multicolor interior wall coating is further optimized by:
the defoaming agent is one or a combination of mineral oil defoaming agent and organic silicon defoaming agent, and can effectively and permanently defoam and inhibit foam.
The inorganic water-in-water multicolor interior wall coating is further optimized by:
the pigment filler is one or a combination of a plurality of calcined kaolin, heavy calcium carbonate, diatomite and titanium dioxide.
The inorganic water-in-water multicolor interior wall coating is further optimized by:
the protective rubber powder is magnesium lithium silicate.
The invention also relates to a preparation method of the inorganic water-in-water multicolor interior wall coating, which comprises the following preparation steps:
A. preparation of granulating gel solution and colloid solution:
adding deionized water into a container according to a certain proportion, adding protective rubber powder in a stirring state, and stirring for a certain time to respectively prepare a granulating rubber solution and a colloid solution; the colloidal solution in the base paint and cellulose ether in the colloidal solution have physical crosslinking effect, so that the internal hydrophobization is realized, the viscosity is certain, too little color point suspension property is poor, the colloidal solution is too soft to be independent and the adhesion is serious, the colloidal solution and the cellulose ether in the base paint have the characteristics that the cellulose ether which is not fully reacted exist in the colloidal solution, the particle toughness is stronger, the hardness is increased, and the gun blocking phenomenon occurs in spraying; the granulating glue solution can carry out gelation reaction with the cellulose ether remained in the base paint to quickly generate a layer of water-insoluble flexible protective film, thereby preventing the mutual penetration of substances inside and outside the color point of the base paint and simultaneously inhibiting the mutual coagulation between the color points.
B. Preparation of base paint:
adding deionized water into a container according to a proportion, adding hydroxyethyl cellulose, a wetting dispersant and a defoaming agent under a low-speed stirring state, adding pigment and filler after stirring into a colloid state, dispersing at a high speed, stirring at a low speed, adding an organic microsphere modified high-modulus potassium silicate solution and the colloid solution prepared in the step A, and uniformly stirring to obtain a base paint;
C. preparation of the continuous phase:
adding deionized water, a defoaming agent and an organic microsphere modified high-modulus potassium silicate solution into a container according to a proportion, and uniformly stirring to obtain a continuous phase;
D. preparing finished paint:
and (3) adding the base paint prepared in the step (B) into the granulating glue solution prepared in the step (A) in a container according to a proportion, stirring for a certain time at a specified rotating speed for granulating, adding the continuous phase prepared in the step (C), and uniformly mixing to obtain the inorganic water-in-water multicolor interior wall coating.
The preparation method of the inorganic water-in-water multicolor interior wall coating is further optimized as follows:
when preparing the granulating glue solution and the colloid solution, the stirring speed is 800-1000 r/min, and the stirring time is 10-20 min;
after pigment and filler are added in the preparation of base paint, the stirring speed is 1500-2000 r/min, and the stirring time is 15-30 min;
stirring at a low speed, and adding the organic microsphere modified high-modulus potassium silicate solution, wherein the stirring speed is 800-1000 r/min, and the stirring time is 10-20 min;
when the continuous phase is prepared, the stirring speed is 800-1000 r/min, and the stirring time is 10-20 min;
when the finished paint is prepared, the stirring speed of the base paint after being added is 100-1500 r/min, and the stirring time is 30-200 s.
The color point of the finished paint is controlled by controlling different stirring speeds and stirring time.
Compared with the prior art, the invention has the following advantages:
in the preparation process of the inorganic water-in-water multicolor interior wall coating, the inorganic water-in-water multicolor interior wall coating is modified by adding pure acrylic or styrene-acrylic emulsion and expandable microbeads, and because the organic microsphere modified high-modulus potassium silicate solution is used as a film forming substance, the inorganic water-in-water multicolor interior wall coating has the characteristics of ultralow VOC, mildew resistance, strong decorative effect and the like, and has more excellent comprehensive performance: the viscosity change value is small after 14d of heat storage, the storage stability is excellent, the thick film has no cracking phenomenon on the premise of meeting the fire grade A and the high polymer organic matter content of less than 5 percent, and the washing resistance is excellent as high as 8000-15000 times; in addition, the invention has the characteristics of light specific gravity, difficult precipitation, low heat conductivity coefficient, good heat insulation performance, low cost and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. All simple improvements to the preparation method of the invention under the premise of the inventive concept belong to the protection scope of the invention.
Example preparation method of inorganic Water-in-Water multicolor interior wall coating
The preparation method of the inorganic water-in-water multicolor interior wall coating comprises the following preparation steps:
A. preparation of granulating gel solution and colloid solution:
adding deionized water into a container according to a certain proportion, adding protective rubber powder in a stirring state, and stirring for a certain time to respectively prepare a granulating rubber solution and a colloid solution;
B. preparation of base paint:
adding deionized water into a container according to a proportion, adding hydroxyethyl cellulose, a wetting dispersant and a defoaming agent under a low-speed stirring state, adding pigment and filler after stirring into a colloid state, dispersing at a high speed, stirring at a low speed, adding an organic microsphere modified high-modulus potassium silicate solution and the colloid solution prepared in the step A, and uniformly stirring to obtain a base paint;
C. preparation of the continuous phase:
adding deionized water, a defoaming agent and an organic microsphere modified high-modulus potassium silicate solution into a container according to a proportion, and uniformly stirring to obtain a continuous phase;
D. preparing finished paint:
and (3) adding the base paint prepared in the step (B) into the granulating glue solution prepared in the step (A) in a container according to a proportion, stirring for a certain time at a specified rotating speed for granulating, adding the continuous phase prepared in the step (C), and uniformly mixing to obtain the inorganic water-in-water multicolor interior wall coating.
Wherein the organic microsphere modified high modulus potassium silicate solution is prepared by the following steps:
a. a small amount of deionized water, the temperature is controlled between 30 ℃ and 70 ℃, a potassium silicate solution with the modulus of 3.2 to 3.5 is added, silica sol is slowly dripped in the stirring process, and the rest deionized water is added after the dripping is finished; stirring for 20 minutes to prepare a mixed solution I;
b. dropwise adding methyltrimethoxysilane into the mixed solution I prepared in the step a, and stirring for 10 minutes to prepare a mixed solution II;
c. adding methyl silicone oil into the mixed solution II prepared in the step b, and stirring for 10 minutes to prepare a mixed solution III;
d. c, reacting the mixed solution III prepared in the step c in a constant-temperature water bath at 50-60 ℃ for 1h, and then putting the mixed solution III into an ultrasonic cleaner for ultrasonic treatment for 1h to prepare a high-modulus potassium silicate solution with higher transparency and 3.8-4.0 modulus;
e. adding one or a combination of pure acrylic emulsion and styrene-acrylic emulsion and expandable microspheres into the high-modulus potassium silicate solution prepared in the step d, and magnetically stirring for 1h to prepare the organic microsphere modified high-modulus potassium silicate solution.
Table 1 the inorganic water-in-water multicolor interior wall coating of the present invention comprises the following components in parts by weight
In component # 1:
the hydroxyethyl cellulose comprises 4 parts of HBR250 hydroxyethyl cellulose and 6 parts of 10W cellulose;
the pigment and filler comprises 10 parts of rutile type titanium dioxide and 60 parts of calcined kaolin;
when preparing the granulating colloid solution and the colloid solution, the stirring speed is 800r/min, and the stirring time is 15min;
after pigment and filler are added in the preparation of the base paint, the stirring speed is 1500r/min, and the stirring time is 20min;
stirring at a low speed, and adding the organic microsphere modified high-modulus potassium silicate solution, wherein the stirring speed is 800-1000 r/min, and the stirring time is 15min;
when the continuous phase is prepared, the stirring speed is 900r/min, and the stirring time is 15min;
when the finished paint is prepared, the stirring speed of the base paint after being added is 250r/min, and the stirring time is 120s.
In the component # 2, the difference from the component # 1 is that:
the hydroxyethyl cellulose is 10 parts of 10W cellulose;
the pigment and filler is 5 parts of rutile type titanium dioxide and 75 parts of calcined kaolin.
In the 3# component, the difference from the 1# component is that: :
the hydroxyethyl cellulose comprises 6 parts of HBR250 hydroxyethyl cellulose and 4 parts of EBS-451 cellulose;
the pigment and filler is 10 parts of rutile type titanium dioxide and 50 parts of calcined kaolin.
Comparative examples 1 to 3 were prepared in the same manner as in examples, with the main difference in the selection of the raw material components. The organic-inorganic composite emulsion used in comparative example 1 is compounded by potassium silicate with the modulus of 3.8, silica sol and styrene-acrylic emulsion; the organic-inorganic composite emulsion selected in the comparative example 2 is prepared by compounding potassium silicate, silica sol and styrene-acrylic emulsion with the modulus of 3.2-3.5; the organic-inorganic composite emulsion selected in the comparative example 3 is prepared by compounding potassium silicate with a modulus of 3.7 and styrene-acrylic emulsion. The organic microsphere modified high-modulus potassium silicate solution selected in the embodiment is prepared by adding silica sol, styrene-acrylic or pure acrylic emulsion and expandable microspheres in the synthesis process of the high-modulus potassium silicate.
The material properties were tested according to the following criteria:
the product of the invention is subjected to performance tests such as thermal storage stability (14 d), low-temperature stability (6 cycles), alkali resistance, scrubbing resistance, thick film cracking, volatile Organic Compound (VOC) content, high molecular organic matter content and the like, wherein the main performance test is referred to the enterprise standard of Q31/015000140C 068-2019 Libang inorganic building paint, and the specific test result is shown in 2.
Table 2 inspection results of inorganic water-in-water multicolor interior wall coatings of the present invention
The inorganic water-in-water multicolor paint obtained by the examples 1# to 3# and the comparative examples 1 to 3 is subjected to application and performance detection, the performance of the examples completely meets the technical index and the actual use requirement, and the inorganic water-in-water multicolor paint has the characteristics of ultralow VOC, class A fireproof performance, mildew resistance, strong decorative effect and the like, and also has the characteristics of heat insulation, heat preservation, light weight, low cost and the like, and is comprehensively analyzed:
the product can be used in different occasions with different protection requirements, wherein the embodiment 1# has the most excellent comprehensive performance, small viscosity change value after 14d of heat storage, excellent stability, no cracking phenomenon of thick films and excellent scrubbing resistance (up to 15000 times) on the premise of meeting the requirements of the fire grade A and the content of high polymer organic matters of less than 5 percent, and has the advantages of light specific gravity, difficult precipitation, low heat conductivity and good heat insulation performance. Compared with comparative example 1, the paint has poor brushing resistance (only 4000 times), high heat conductivity, no heat insulation property and high VOC; comparative example 2 has the problems of cracking, high heat conductivity, no heat insulation and heat preservation, and high VOC; comparative example 3 has a serious post-thickening phenomenon (viscosity increases by 15KU after heat storage), poor stability, influence on construction application, high heat conductivity, no heat insulation and heat preservation, high VOC and poor performance of the comparative example.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art should appreciate that many modifications, adaptations, and variations of the disclosed technology can be made without departing from the scope of the present invention; meanwhile, any equivalent changes, modifications and evolution made to the above embodiments according to the essential technology of the present invention still fall within the scope of the technical solution of the present invention.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The experimental methods of the present invention, in which specific conditions are not specified, are generally performed under conventional conditions or under conditions recommended by the manufacturer.
The various optimized technical schemes in the invention can be combined with each other unless otherwise stated.
Percentages and parts are weight percentages and parts unless otherwise indicated.
The experimental methods in the specification and examples, in which specific conditions are not specified, are generally performed under conventional conditions or under conditions recommended by the manufacturer.
The various raw materials, reagents, components used in the present invention are, unless otherwise indicated, the corresponding raw materials commonly used in the art.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any methods and materials similar or equivalent to those described may be used in the present invention.
Claims (7)
1. An inorganic water-in-water multicolor interior wall coating, which is characterized in that:
the composite material comprises the following components in parts by weight:
200-400 parts of granulating glue solution, 300-600 parts of base paint and 100-500 parts of continuous phase;
the granulating glue solution comprises the following components in parts by weight:
800-980 parts of deionized water,
20-120 parts of protective rubber powder;
the base paint comprises the following components in parts by weight:
300 to 750 parts of deionized water,
5 to 10 parts of hydroxyethyl cellulose,
3-6 parts of wetting dispersant,
2-5 parts of defoaming agent,
150 to 300 parts of organic microsphere modified high modulus potassium silicate solution,
10-80 parts of pigment and filler,
40-150 parts of colloid solution;
wherein the colloid solution comprises the following components in parts by weight:
800-980 parts of deionized water,
20-120 parts of protective rubber powder;
wherein the continuous phase comprises the following components in parts by weight:
100 to 600 parts of deionized water,
1-2 parts of defoaming agent,
400-900 parts of organic microsphere modified high modulus potassium silicate solution;
the organic microsphere modified high-modulus potassium silicate solution comprises the following components in parts by weight:
5 to 25 parts of one or combination of pure acrylic emulsion and styrene-acrylic emulsion,
30 to 50 portions of potassium silicate with the modulus of 3.2 to 3.5,
10-30 parts of silica sol,
1 to 3 parts of methyltrimethoxysilane,
1-2 parts of methyl silicone oil,
1 to 3 parts of expandable microspheres,
30-50 parts of deionized water;
the organic microsphere modified high-modulus potassium silicate solution is prepared by the following steps:
a. a small amount of deionized water, the temperature is controlled between 30 ℃ and 70 ℃, a potassium silicate solution with the modulus of 3.2 to 3.5 is added, silica sol is slowly dripped in the stirring process, and the rest deionized water is added after the dripping is finished; stirring for 20 minutes to prepare a mixed solution I;
b. dropwise adding methyltrimethoxysilane into the mixed solution I prepared in the step a, and stirring for 10 minutes to prepare a mixed solution II;
c. adding methyl silicone oil into the mixed solution II prepared in the step b, and stirring for 10 minutes to prepare a mixed solution III;
d. c, reacting the mixed solution III prepared in the step c in a constant-temperature water bath at 50-60 ℃ for 1h, and then putting the mixed solution III into an ultrasonic cleaner for ultrasonic treatment for 1h to prepare a high-modulus potassium silicate solution with higher transparency and 3.8-4.0 modulus;
e. adding one or a combination of pure acrylic emulsion and styrene-acrylic emulsion and expandable microspheres into the high-modulus potassium silicate solution prepared in the step d, and magnetically stirring for 1h to prepare the organic microsphere modified high-modulus potassium silicate solution.
2. The inorganic water-in-water multicolor interior wall coating according to claim 1, wherein:
the wetting dispersant is a polycarboxylate ammonium salt dispersant.
3. The inorganic water-in-water multicolor interior wall coating according to claim 1, wherein:
the defoaming agent is one or a combination of mineral oil defoaming agent and organic silicon defoaming agent.
4. The inorganic water-in-water multicolor interior wall coating according to claim 1, wherein:
the pigment filler is one or a combination of a plurality of calcined kaolin, heavy calcium carbonate, diatomite and titanium dioxide.
5. The inorganic water-in-water multicolor interior wall coating according to claim 1, wherein:
the protective rubber powder is magnesium lithium silicate.
6. The method for preparing the inorganic water-in-water multicolor interior wall coating according to any of claims 1 to 5, characterized in that:
the preparation method comprises the following preparation steps:
A. preparation of granulating gel solution and colloid solution:
adding deionized water into a container according to a certain proportion, adding protective rubber powder in a stirring state, and stirring for a certain time to respectively prepare a granulating rubber solution and a colloid solution;
B. preparation of base paint:
adding deionized water into a container according to a proportion, adding hydroxyethyl cellulose, a wetting dispersant and a defoaming agent under a low-speed stirring state, adding pigment and filler after stirring into a colloid state, dispersing at a high speed, stirring at a low speed, adding an organic microsphere modified high-modulus potassium silicate solution, and stirring uniformly to obtain a colloid solution prepared in the step A, thereby obtaining a base paint;
C. preparation of the continuous phase:
adding deionized water, a defoaming agent and an organic microsphere modified high-modulus potassium silicate solution into a container according to a proportion, and uniformly stirring to obtain a continuous phase;
D. preparing finished paint:
and (3) adding the base paint prepared in the step (B) into the granulating glue solution prepared in the step (A) in a container according to a proportion, stirring for a certain time at a specified rotating speed for granulating, adding the continuous phase prepared in the step (C), and uniformly mixing to obtain the inorganic water-in-water multicolor interior wall coating.
7. The method for preparing the inorganic water-in-water multicolor interior wall coating according to claim 6, wherein the method comprises the following steps:
when preparing the granulating glue solution and the colloid solution, the stirring speed is 800-1000 r/min, and the stirring time is 10-20 min;
after pigment and filler are added in the preparation of base paint, the stirring speed is 1500-2000 r/min, and the stirring time is 15-30 min;
stirring at a low speed, and adding the organic microsphere modified high-modulus potassium silicate solution and the colloid solution, wherein the stirring speed is 800-1000 r/min, and the stirring time is 10-20 min;
when the continuous phase is prepared, the stirring speed is 800-1000 r/min, and the stirring time is 10-20 min;
when the finished paint is prepared, the stirring speed of the base paint after being added is 100-1500 r/min, and the stirring time is 30-200 s.
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| CN115960478A (en) * | 2023-02-08 | 2023-04-14 | 沪宝新材料科技（上海）股份有限公司 | VOC-free inorganic multicolor paint |
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| CN115477862A (en) | 2022-12-16 |
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